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java.lang.Class.isPrimitive()用法解

java.lang.Class.isPrimitive()用法解

作者: 03ca2835cf70 | 来源:发表于2019-12-06 15:51 被阅读0次

https://www.cnblogs.com/ninth/p/6164471.html

一、概述:

此方法主要用来判断Class是否为原始类型(boolean、char、byte、short、int、long、float、double)。

二、格式:

Class.isPrimitive(),原始类型下返回true

三、示例:

public static void main(String[] args){

Class stringClass=String.class;
System.out.println("String is primitive type:"+stringClass.isPrimitive());

Class booleanClass=Boolean.class;
System.out.println("Boolean is primitive type:"+booleanClass.isPrimitive());

Class booleanType=boolean.class;
System.out.println("boolean is primitive type:"+booleanType.isPrimitive());

Class byteType=byte.class;
System.out.println("byte is primitive type:"+byteType.isPrimitive());

Class charType=char.class;
System.out.println("char is primitive type:"+charType.isPrimitive());

Class shortType=short.class;
System.out.println("short is primitive type:"+shortType.isPrimitive());

Class intType=int.class;
System.out.println("int is primitive type:"+intType.isPrimitive());

Class longType=long.class;
System.out.println("long is primitive type:"+longType.isPrimitive());

Class floatType=float.class;
System.out.println("float is primitive type:"+floatType.isPrimitive());

Class doubleType=double.class;
System.out.println("double is primitive type:"+doubleType.isPrimitive());

}
结果输出:

String is primitive type:false
Boolean is primitive type:false
boolean is primitive type:true
byte is primitive type:true
char is primitive type:true
short is primitive type:true
int is primitive type:true
long is primitive type:true
float is primitive type:true
double is primitive type:true

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